Creating an array of objects, from multiple buttons in IB, XCode

Question

I want to have three sets of 10 buttons for an iOS app. I want to show/hide each set (reveal one set at a time). I am planning to use tags to do this.

As it is I have a property for each button (ex: btn01, btn02, etc), so I have 30 properties. I add that to an array, and then use the following code to hide buttons with one tag or the other.

My question is, is there a more efficient way to create the array of objects, rather than setting up 30 properties (one for each button). It's fine, just wonder if there is a cleaner way, using a loop to gather each button from IB somehow. Can't think of it.

    if (tagState == 1) {
        tagState = 2;
    }else {
        tagState = 1;
    }

    for (btn in myArray) {
        NSLog(@"%@",btn);
        if (tagState == 1) {
            if (btn.tag == 1) {
                [btn setHidden:YES];
            }
            if (btn.tag == 2) {
                [btn setHidden:NO];
            }

        } else if (tagState == 2) {
            if (btn.tag == 1) {
                [btn setHidden:NO];
            }
            if (btn.tag == 2) {
                [btn setHidden:YES];
            }

        }    
    }
}

Could you add each set of buttons to a different UIView and then simply hide/show each view as needed? — Jake Stoeffler
– Jake Stoeffler, Commented Jul 12, 2012 at 5:02

andyvn22 · Accepted Answer · 2012-07-12 05:22:34Z

1

I think you can use the view hierarchy very effectively here: put each group of buttons into its own UIView, connect only the three UIViews to outlets, and hide/show them. Note that this only works if you don't also need to access the individual buttons for some other reason.

answered Jul 12, 2012 at 5:22

andyvn22

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1 Comment

OWolf Over a year ago

I think this is what I am going to do. Thanks

florianbuerger · Accepted Answer · 2012-07-12 16:10:45Z

1

You can use IBOutletCollection, it is an NSArray of outlets.

To e.g. hide all outlets from a collection, you can use

[outlets setValue:@YES forKey:@"hidden"]

or

[outlets setValue:[NSNumber numberWithBool:YES] forKey:@"hidden"]

when using LLVM < 4.0

answered Jul 12, 2012 at 16:10

florianbuerger

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